Process-based server: When a process dismisses for any purpose, the kernel closes all open descriptors. Thus, the child’s copy of the connected descriptor will be automatically closed when the child exits. To avoid memory leak, the parent and the child required to close their corresponding copies of “connfd”.

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Answer 1

Question

Chapter 12.4, Problem 12.5PP

Program Plan Intro

Process-based server:

When a process dismisses for any purpose, the kernel closes all open descriptors. Thus, the child’s copy of the connected descriptor will be automatically closed when the child exits.

To avoid memory leak, the parent and the child required to close their corresponding copies of “connfd”.

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Answer 2

Question

Chapter 12.4, Problem 12.5PP

Program Plan Intro

Process-based server:

When a process dismisses for any purpose, the kernel closes all open descriptors. Thus, the child’s copy of the connected descriptor will be automatically closed when the child exits.

To avoid memory leak, the parent and the child required to close their corresponding copies of “connfd”.

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Answer 3

Question

Chapter 12.4, Problem 12.5PP

Program Plan Intro

Process-based server:

When a process dismisses for any purpose, the kernel closes all open descriptors. Thus, the child’s copy of the connected descriptor will be automatically closed when the child exits.

To avoid memory leak, the parent and the child required to close their corresponding copies of “connfd”.

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Answer 4

Question

Chapter 12.4, Problem 12.5PP

Program Plan Intro

Process-based server:

When a process dismisses for any purpose, the kernel closes all open descriptors. Thus, the child’s copy of the connected descriptor will be automatically closed when the child exits.

To avoid memory leak, the parent and the child required to close their corresponding copies of “connfd”.

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Answer 5

Chapter 12.4, Problem 12.5PP

Program Plan Intro

Process-based server:

When a process dismisses for any purpose, the kernel closes all open descriptors. Thus, the child’s copy of the connected descriptor will be automatically closed when the child exits.

To avoid memory leak, the parent and the child required to close their corresponding copies of “connfd”.

Answer 6

Chapter 12.4, Problem 12.5PP

Program Plan Intro

Process-based server:

When a process dismisses for any purpose, the kernel closes all open descriptors. Thus, the child’s copy of the connected descriptor will be automatically closed when the child exits.

To avoid memory leak, the parent and the child required to close their corresponding copies of “connfd”.

Answer 7

Chapter 12.4, Problem 12.5PP

Program Plan Intro

Process-based server:

When a process dismisses for any purpose, the kernel closes all open descriptors. Thus, the child’s copy of the connected descriptor will be automatically closed when the child exits.

To avoid memory leak, the parent and the child required to close their corresponding copies of “connfd”.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 12.1 - Prob. 12.1PP Ch. 12.1 - Prob. 12.2PP Ch. 12.2 - Practice Problem 12.3 (solution page 1036) In...Ch. 12.2 - Practice Problem 12.4 (solution page 1036) In the...Ch. 12.4 - Prob. 12.5PP Ch. 12.4 - Prob. 12.6PP Ch. 12.5 - Prob. 12.7PP Ch. 12.5 - Prob. 12.8PP Ch. 12.5 - Prob. 12.9PP Ch. 12.5 - Prob. 12.10PP

Solution Summary: The author explains that when a process dismisses for any purpose, the kernel closes all open descriptors. Thread-based server: all threads share the same table.

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Chapter 12 Solutions